Assessment of domestic pig-bushpig (Potamochoerus larvatus) interactions through local knowledge in rural areas of Madagascar

Rakotoarivony Rianja Tsanta Ny Aina, Kassie Daouda, Andriamahefa Alpha, Andria-Mananjara Diana Edithe, Rakotoarinoro Mihaja, Ramaroson Herilantonirina Solotiana, Raliniaina Modestine, Rasamoelina Miatrana, Gomez-Vazquez Jose Pablo, Jori Ferran. 2024. Assessment of domestic pig-bushpig (Potamochoerus larvatus) interactions through local knowledge in rural areas of Madagascar. Scientific Reports, 14:16310, 17 p.

Résumé : In many parts of the world, domestic and wild animal populations interact at the interface between natural and agricultural ecosystems. Introduced with the first inhabitants arriving from eastern Africa, the bushpig (Potamochoerus larvatus) is the largest living terrestrial mammal in Madagascar. Bushpigs are regularly reported close to human settlements where they damage crops and gardens. As domestic pigs are often raised in free-ranging conditions around the villages, bushpigs and domestic pigs can interact leading to the transmission and circulation of shared swine pathogens that impact both animal and human health. In this study, we characterized the socio-ecological context of bushpig–domestic pig interactions in two different regions of western Madagascar. We conducted participatory mapping sessions and focus group interviews with 65 hunters, 80 pig farmers and 96 crop farmers in 20 fokontany, the smallest administrative unit in Madagascar. After discussing with participants, we gathered information about the spatialization of interactions and their potential geographical drivers. We explored data by performing multiple correspondence analysis and hierarchical clustering on principal components. Based on the reported occurrence or absence of bushpig-domestic pig interactions we were able to classify areas with high or intermediate levels of interactions or no interactions at all. Interactions between the two pig species were reported in only 25% of the fokontany assessed. Even though both suid species were attracted to fruit trees, crops, and water sources, only indirect interactions in those spots were reported. Direct interactions were reported in 10% of cases and referred to interspecific sexual and/or agonistic behavior. The participatory methods used to acquire local knowledge about natural events were confirmed as valuable, low-cost exploratory methods to characterize areas with wild-domestic animal interactions. The results of this study will help plan future studies to characterize the interface between the two species from an ecological or epidemiological perspective using more sensitive and sophisticated ecological approaches.

Mots-clés Agrovoc : transmission des maladies, porcin, approche participative, animal sauvage, épidémiologie, population rurale, santé animale, animal domestique, interaction, connaissance locale, savoirs autochtones

Mots-clés géographiques Agrovoc : Madagascar

Mots-clés complémentaires : Potamochoerus larvatus

Mots-clés libres : Domestic pig, Bushpig, Potamochoerus larvatus, Interactions, Local knowledge, Madagascar

Classification Agris : L20 - Écologie animale
L73 - Maladies des animaux

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

Agences de financement hors UE : Centre de Coopération Internationale en Recherche Agronomique pour le Développement

Auteurs et affiliations

• Rakotoarivony Rianja Tsanta Ny Aina, CIRAD-BIOS-UMR ASTRE (FRA) - auteur correspondant
• Kassie Daouda, CIRAD-BIOS-UMR ASTRE (MDG) ORCID: 0000-0001-6340-9610
• Andriamahefa Alpha, FOFIFA (MDG)
• Andria-Mananjara Diana Edithe, FOFIFA (MDG)
• Rakotoarinoro Mihaja, FOFIFA (MDG)
• Ramaroson Herilantonirina Solotiana, CIRAD-BIOS-UMR ASTRE (FRA)
• Raliniaina Modestine, FOFIFA (MDG)
• Rasamoelina Miatrana, FOFIFA (MDG)
• Gomez-Vazquez Jose Pablo, UC (USA)
• Jori Ferran, CIRAD-BIOS-UMR ASTRE (FRA) ORCID: 0000-0001-5451-7767

Source : Cirad-Agritrop (https://agritrop.cirad.fr/610005/)

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